Sweetpotatomakesacomebackasapopularfood(it'shealthiertoo！)Onceconsideredafringe(非主流的)foodbytheU．S.dinnertablemainstream，sweetpotatoesarefastbecomingpopulareverywherefromfastfoodchainstoexpensiver

Question

Sweet potato makes a comeback as a popular food (it's healthier too！)

Once considered a fringe(非主流的) food by the U．S.dinner table mainstream，sweet potatoes are fast becoming popular everywhere from fast food chains to expensive restaurants and the White House table.

Three years ago the “Wall Street Journal” wrote in a front page article that except for their use in a Thanksgiving dish   sweet potatoes were a wholly uninteresting food.Yet over the past two years the number of restaurants offering a sweet potato­based side dish has increased 40 percent.Food giant ConAgra just spent $155 million to open the world's first plant devoted entirely to frozen sweet potato products and U．S.farmers are planning to harvest a record­setting 2 billion pound crop.

“It's not something we believe is a fashion ” said Andy Johnston of ConAgra Foods Lamb Weston.

According to research conducted by ConAgra 30 percent of sweet potato eaters report consuming the vegetable several times per month.Only 12 percent eat them only during the Thanksgiving and winter holiday season.

Analysts believe the sweet potato's growing popularity in large part is due to sweet potato fries which account for the majority of the vegetable's presence in U．S.restaurants.In fact Google searches for “sweet potato fries” increased 40 percent over the past year.

Sweet potatoes have also become popular among more conscious eaters，however in part because they are high in vitamins and have a low glycemic(血糖的)index in spite of their sweetness.Both Weight Watchers and the South Beach Diet have recommended sweet potatoes roasted in a little oil rather than fried and doctors are recommending them for diabetics.

“Within the diabetic community it's become pretty common knowledge that sweet potatoes are good for you so there's a great appeal because so many people have diabetes now，” said Chef Michel Nischan，who helps host a TV show for people with diabetes.

56．This passage mainly wants to tell us that ________.

A．American high officials have started to eat sweet potatoes

B．Expensive restaurants have begun to serve costumers with sweet potatoes

C．Sweet potatoes are becoming a popular food in the United States

D．The habit of eating sweet potatoes was formed a long time ago

57．From this reading passage we infer that ConAgra ________.

A．is one of the biggest food­making companies in the US

B．is one of the richest food­selling companies in the US

C．has asked American farmers to produce more sweet potatoes this year

D．has produced large quantities of sweet potato­based side dishes

58．Which of the following may NOT encourage the sweet potato's popularity?

A．US restaurants recommend sweet potatoes to their customers as a vegetable.

B．Google searches show more and more people are becoming interested in sweet potatoes.

C．Sweet potatoes are rich in vitamins and low in glycermic index.

D．Sweet potatoes taste very sweet.

Answer 1

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